Skiving machine



Filed Jan. '7, 1955 y 2 Sheets-Sheet 1 '45 @lll/ff@ f5 Carles CRO@ ATTORNEYS Oct. 20, 1936.` c. c. ROE I 2,058,356

- SKIVING MACHINE Filed Jan. '7, 1935 2 Sheets--Sheecl 2 C/zarZeS CZOQ INVENTOR Patented Oct. 20, 1936 UNITED STATES sKiviNG MACHINE Charles C. Roe,

Cookeville, Tenn.

Application January 7, 1935, Serial No. 758

1 Claim.

The invention relates to a skiving machine and more especially to a shoe shank and sole skiving apparatus.

The primary object of the invention is the provision of a. machine or apparatus of this character wherein, through the mounting of a knife blade and a guide, the shank of a shoe and the sole can be properly beveled or cut at the meeting edges and such beve1 or cut being accomplished automatically, thereby avoiding the use of a hand knife for this purpose, particularly in the half-soling of shoes, as is the common practice.

Another object of the invention is the provision of a machine or apparatus of this character, wherein the knife blade is supported in a manner to give the proper bevel or angular out to the work according to the thickness of the leather in the n build of the shoe and the piece used for halfsoling of such shoe and in the use of the machine or apparatus the leather shank-of the shoe will be cut'automatically and likewise the half-soling leather piece, to assure the overlap between the sole piece and the shank of the shoe and ,the lie of the outer faces substantially flush with each other to assure a neat job when half-soling footwear, such as shoes or the like.

A further object of the invention is the provision of a machine of this character, which is comparatively simple in construction, thoroughly reliable and efficient in its operation, enabling the execution of Work with dispatch, assuring an automatic cutting for the skiving of the leather in the half-soling of shoes, strong, durable, and inexpensive to manufacture.

With these and other objects in View, the invention consists in the features of construction, combination and arrangement of parts to be hereinafter more fully described in detail, illustrated in the accompanying drawings, which disclose the preferred embodiment of the invention, and pointed out in the claim hereunto appended.

In the accompanying drawings:

Figure 1 is an elevation partly in section of a machine or apparatus constructed in accordance with the invention, showing a shoe in position to be guided for the skiving operation.

Figure 2 is a top plan view partly in section of the machine or apparatus.

Figure 3 is a fragmentary front elevation partly in section.

Figure 4 is an enlarged fragmentary side elevation partly in section.

Figure 5 is a view similar to Figure 4 looking toward the reverse side of the machine or apparatus.

Figure 6 is a perspective view' of the cutting or skiving blade.

Figure 7 is a fragmentary sectional View Showing a cutting blade post and its connection with a hanger therefor.

Figure 8 is a fragmentary side elevation showing the universal acting knuckle between the feed roller and the power shaft of the machine.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

Referring to the drawings in detail, the machine or apparatus comprises a stand A in the form of a frame open atk one side, includingthe base I0, upright II and head I2, respectively, the

said head being inoverhanging relation to the base 'I0 and vertically spaced therefrom by the upright II of said frame. f f

The head I2 at the end thereof next to the open side. of the stand is formedwith a barrel I3 providing therebenath an inset I4 in the head I2 for the roller fork I5 having journaled therein the feed roller I6 carrying a serrated or roughened periphery II. The fork I5 is formed with a guide stem I8 slidably iitted in the barrel I3 and carries an annular shoulder I9 against which works a coiled expansion spring 20 surrounding said stem and seated against an adjusting plug 2| closing the upper open end of the barrel I3, the plug being formed with a clearance for the stem I8 which slides therethrough and in this manner the feed roller I5 is held under tension. The fork I5 slidably fits in* a guide track 22 in the inset I4 so as to avoid turning of the fork on vertical sliding movement thereof when the feed roller I6 is active.

The journal 23 of the feed roller I6 has connection through a slip-jointed flexible knuckle 24 with a power shaft 25 journaled in bearings 26 and 21 as provided in the frame of the stand. This power shaft has a fixed pinion or gear 28 meshing with a driving gear 29 of a stud driving shaft 30 carrying a hand crank 3|. The driving shaft 30 is held rotatably fitted in the frame of the machine through a retaining screw 32 fitted in the head I2, as shown in Figure 2 of the drawings.

Within the frame of the stand A is a vertically disposed work guide shaft 33, it fitting a bearing 34 on the base I0 and the bearing 26, the said shaft 33 being at right angles to the power shaft. The shaft 33 carries a work guide in the form of an inverted conoidal-shaped turntable 35 fixed,

rotation of the work guide.

at 36, to the said shaft. The shaft 33 has fixed thereto a gear 31 which meshes with a pinion 38 on the power shaft 25 so that motion is transmitted from the latter to the shaft 33 for the The guide 35 at its top is formed with a flat annular rest flange 39 which confronts the feed roller I 6 and upon this flange is seated the shoe shank 40 or a half-sole piece (not shown) to be skived or cut for the beveling of the same. In the skiving or cutting of the shank I4 of a shoe 4I the latter is placed against the guide 35 in the position as shown by dotted lines in Figure 1 of the drawings and in this position the free end portion of the shank 40 will lie upon the rest ange 39 of theV guide'V 35 and on rotation of the latter synchronously vwith the rotation of the feed roller I6, which engages with said shank, the latter will be presented to a cutting blade 42. This blade 42 at the heel edge thereof has the oppositely extending tongues or ears 43 which slidably fit in slots 44 provided in the heads of blade holding Iposts 45, each received in oppositely arranged collars 46. The collars 46 are swiveled in adjustable hangers 41 and 48, respectively, by lock nuts 49 threaded on the posts 45. The hanger 41 is fastened to the roller fork I for vertical adjustment by set screws 5U, these being passed through an elongated slot 5I provided in the hanger 41, while the hanger 48 is attached to the head I2 at one side thereof for vertical adjustment by set screws 52, these being passed through an elongated slot 53 provided in said hanger'48. It should be apparent that by adjustment of the hangers 41 and 48 the blade 42v can be angularly set for the bevel cutting action thereof upon the work and by reason of the hanger 41 being attached to the fork I5 for the roller I 6, such blade 42 is automatically adjusted angularly according to the thickness of the work presented between the feed roller I6 and the guide 35 for giving the proper angle of cut by the blade 42 consistently with the thickness of the work being operated upon in the machine or apparatus.

The blade 42 in reality angularly floats and its angular disposition is automatically taken care of under the automatic adjustment of the feed roller I6 when engaging the work to be skived or cut, the fork I5 for the roller I6 being under tension and such tension varied by adjustment of the plug 2I. The roller I6 is selfadjusting in conformity with the thickness of the work, as for example, a half-soling leather piece or the shank 4|] of the shoe 4I, so that a proper angular cut is assured and the cutting operation is automatic when the work is fed by the roller I6 and the guide 35 to the blade 42 in the operation of the machine or apparatus. In this instance the machine is operated manually through the instrumentality of the hand crank 3| so that the power shaft 25 will be rotated and the latter driving the roller I6 and the guide 35 respectively.

The posts 45, through the lock nuts 49 thereon, can be adjusted in the hangers 41 and 48 with relation to the work to be presented thereto and particularly when the blade is worn away by the sharpening thereof at its cutting edge.

The knife or cutting blade 42 has the ear 43 at one end upset so that the holding post 45 receiving this ear can not possibly drag upon the Work. The other ear 43 of the knife or cutting blade 42 is Xedly set in the holding post receiving it so as to prevent the cutting blade from moving from one side to the other in the working of the machine.

The knife or cutting blade 42 at the innermost end thereof is formed with a work lifter 54 which serves to raise the leather to have it pass over the knife or cutting blade in the working of the machine.

In the use of the machine or apparatus, hand cutting or skiving of the shoe shank and sole is entirely eliminated.

It is, of course, understood that a major portion of the old sole of a shoe to be half-soled is cut away in close proximity to the shank of the shoe so as to permit the shank 40 to be conveniently fed to the blade 42 of the machine or apparatus for angular cutting action in the operation of the-machine or apparatus. There is a uniformity of feed speed between the guide 35 and the feed roller I6 during the working of the machine orv apparatus and the skiving being had automatically by such working.

What is claimed is:

A turntable, a feed roller thereabove, a mount for the roller, spring influenced to advance the roller to the upper peripheral face of the turntable limited in movement in such direction and held from axial turning, vertically adjustable inner and outer hangers one of which is carried by the mount, laterally adjustable swivel supported posts carried by the hangers, a knife blade arranged at an angle between the turntable and the roller having one end fixed to the inner post and its second end slidable through the outer post, and a work lifting element carried by the knife adjacent the turntable.

CHARLES C. ROE. 

